A Sustainable Self‐Induced Solution Seeding Approach for Multipurpose BiFeO ₃ Active Layers in Flexible Electronic Devices

The direct integration of crystalline oxide layers into flexible electronic systems requires the development relatively simple, low-temperature processing routes. Seeding represents a powerful strategy to reach this objective by generation preferential sites for nucleation phases with reduced energy barrier. Here, novel approach is reported where nanoseeds are generated in situ from precursor solution using solvent-engineering (solvent-antisolvent). controlled addition an antisolvent (1,3-propanediol) metal salts (Bi/Fe) dissolved acetic acid results formation nanocrystals (seeds) supersaturation. presence such also confirmed deposited layers, improving significantly crystallinity respective BiFeO3 thin films as complementary, deduced piezoresponse force microscopy. Using strategy, directly grown on polymeric substrates at only 350 °C showing remanent polarization 10.5 µC cm−2 and clear photovoltaic effect (11.7 µW cm−2) interest computer memories harvesters. flexibility may enlarge number applications multifunctional, lead-free material next-generation digital sustainable devices based facile, low-cost fabrication method consumption.